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Finding the Fourth Proportional to 172,100.60, 257,640.60 and 127,923.20

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Solution

The fourth proportional to 172,100.60, 257,640.60 and 127,923.20 is: 191,505.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,100.60 : 257,640.60 = 127,923.20 : x
  2. Step 2: Convert to fraction form
    172,100.60/257,640.60 = 127,923.20/x
  3. Step 3: Cross multiply
    172,100.60x = 257,640.60 × 127,923.20
  4. Step 4: Simplify right side
    172,100.60x = 32,958,210,001.92
  5. Step 5: Solve for x
    x = 32,958,210,001.92/172,100.60
  6. Step 6: Final answer
    x = 191,505.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.